Journal ArticleDOI
Vibration based damage detection of rotor blades in a gas turbine engine
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TLDR
In this article, the authors describe the problems concerning turbine rotor blade vibration that seriously impact the structural integrity of a developmental aero gas turbine, where the blades are fabricated from nickel base super alloy through directionally solidified investment casting process.About:
This article is published in Engineering Failure Analysis.The article was published on 2014-11-01. It has received 89 citations till now. The article focuses on the topics: Turbine blade & Rotor (electric).read more
Citations
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Reconstruction of blade tip-timing signals based on the MUSIC algorithm
TL;DR: In this article , the authors proposed an amplitude identification method based on the discrete Fourier transformation (DFT) and remainder theorem, which is a feasible solution for the spectrum methods that cannot directly extract amplitude from the pseudo spectrum.
Journal ArticleDOI
Modal characteristics of cracked thin walled unsymmetrical cross-sectional steel beams curved in plan
Palash Dey,Sudip Talukdar +1 more
TL;DR: In this article, a generalized finite element (FE) model for multiple cracked thin-walled curved beams was developed by taking account of the warping effects in the cracked section.
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Enhancing the curvature mode shape method for structural damage severity estimation by means of the distributed genetic algorithm
TL;DR: Results of applying the proposed approach based on the finite element (FE) method on beam and frame structures under various damage scenarios and an experimental set-up show that this method is very effective in damage detection of such structures.
Journal ArticleDOI
Forced vibration analysis of blade after selective laser shock processing based on Timoshenko’s beam theory
TL;DR: In this article, the effect of selective laser shock processing (LSP) on the forced vibration response of blade based on the functionally graded (FG) Timoshenko's beam theory was theoretically explored.
Journal ArticleDOI
Numerical analysis of the blade tip-timing signal of a fiber bundle sensor probe
TL;DR: In this article, the model of the tip-timing signal of the fiber bundle sensor is established and the results are in concordance with the model established, and the effects of the clearance change between the sensor and the blade and the deflection of tip surface are analyzed.
References
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Journal ArticleDOI
High cycle fatigue in aircraft gas turbines—an industry perspective
TL;DR: The largest single cause of component failures in modern military aircraft gas turbine engines is high cycle fatigue (HCF), exceeding the number attributed to low cycle fatigue, corrosion, overstress, manufacturing processes, mechanical damage, and materials.
Journal ArticleDOI
Flutter and Resonant Vibration Characteristics of Engine Blades
TL;DR: In this article, the authors present an in-depth study of blade vibration problems that seriously impact development of advanced gas turbine configurations, and they conclude that structural integrity of power plants is the dominant factor that influences the quality, reliability, and marketability of the product.
Journal ArticleDOI
An investigation of fatigue failures of turbine blades in a gas turbine engine by mechanical analysis
TL;DR: In this article, a series of mechanical analyses were performed to identify the possible causes of the failures by examining anomalies in the mechanical behaviour of the turbine blade, and the steady-state stresses and dynamic characteristics of the blade were evaluated and synthesized in order to determine the cause of blade failures.
Journal ArticleDOI
Experimental crack propagation and failure analysis of the first stage compressor blade subjected to vibration
TL;DR: In this paper, the results of experimental vibration tests of the helicopter turbo-engine compressor blades were presented for selected undamaged blades, without existence of preliminary cracks or corrosion pits.
Journal ArticleDOI
Failure analysis of Ti6Al4V gas turbine compressor blades
TL;DR: In this article, the failure mechanism of Ti6Al4V compressor blades of an industrial gas turbine was analyzed by means of both experimental characterisations and numerical simulation techniques Several premature failures occurred in the high pressure section of the compressor due to the fracture of the blade roots.
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